the latest polls among registered voters put obama and romney dead even. >>> sdusky speaks. hours before being sentenced on 45 counts of child sexual abuse, the 68-year-old proclaims his innocence. >>> and curious discovery. the mars rover finds a bright object on the surface, but what the mars rover finds a bright object on the surface, but what exactly is it? captions paid for by nbc-universal television >>> hello and good morning. i'm lynn berry. and the race is on. the 2012 presidential election is just four weeks away, and now new polls show the race between president obama and republican rival mitt romney is closer than ever. nbc's tracie potts has the latest on this. >>> lynn, good morning. it depends which polls you're looking at. a new pew research poll shows romney got a boost. gallup has the president up five points. they think he got a boost after the positive jobs report. mitt romney in virginia yesterday, he moves on today to iowa and ohio, but in virginia he gave a foreign policy speech where he said the world is more dangerous now because of the president's p